Categorical

General

Opacity

Specific uses

• Female/male/other
• Rise/fall
• Good/bad
• Last year/this year
• Imports/exports?
• Nations: England, Scotland, Wales, NI

De-emphasised

#C6C6C6 (Grey 30)

Ranked

Sequential

Diverging

Likert scale

Bivariate

Black (reference line on a bar chart)